Grapevine plant named ‘ARRATHIRTYFOUR’

ABSTRACT

A new distinct variety of grapevine named ‘ARRATHIRTYFOUR’ abundantly forms attractive meaty and crunchy seedless berries with a green skin coloration; in medium-to-large clusters which display a sweet and natural flavor. The fruit commonly is ready for harvesting during July in San Joaquin Valley of Central California, U.S.A, and displays good eating qualities as a table grape. The fruit firmness renders the fruit well amenable for handling, shipping, and storage.

Classification: The present invention relates to a new Vitis viniferaGrapevine.

Variety denomination: The new Grapevine has a varietal denomination‘ARRATHIRTYFOUR’.

BACKGROUND OF THE INVENTION

A breeding program was initiated during the late 90's near Bakersfieldin San Joaquin Valley of Central California. In 2011, during thisbreeding program, a new variety of Vitis vinifera was created bydeliberate cross breeding of two parent plants by emasculation of thepollen bearing organ of the female and introducing pollen from anothermale origin. The female parent of the new variety was E.Z., a whitefertile variety without a seed trace (non-patented in the UnitedStates).

The male parent (i.e. the pollen parent) of the new variety was GAW 15which is a mid-season white grape variety with thin skin and a naturalacid flavor (non-patented in the United States).

TABLE 1 Comparison of ‘ARRATHIRTYFOUR’ with its parents Thompson‘ARRATHIRTYFOUR’ E.Z. GAW 15 Seedless Pruning spur cane spur cane methodBunches 42 32-36 50 30 per vine Berry size 22 mm to 24 mm 16 mm 22 mm to18 mm to (mm) 24 mm 20 mm

E.Z. X GAW 15

An artificial pollination was created, and the result was an embryowhich possessed unique genetic qualities. The rudiments resulting fromthe above pollination were embryo rescued.

In 2012 the plant was transplanted to Bakersfield in San Joaquin Valleyof Central California.

It was found that the new grapevine of the present invention possessesthe following combination of characteristics:

-   -   (a) Forms attractive meaty and crunchy seedless berries with a        white skin coloration; in medium-to-large clusters which display        a sweet and natural flavor,    -   (b) Commonly bears fruit during the month of July in the San        Joaquin Valley of Central California, U.S.A., and    -   (c) Bears fruit that is firm and is well amenable for storage,        handling, and shipping.

The new variety during observation to date has displayed no visibledisease, and has displayed an ability to well resist cold, drought,heat; but sensitive to direct exposure to sun and wind. The fruit of thenew variety has been found to display excellent handling and shippingqualities combined with desirable dessert eating qualities.

The new variety of the present invention has been found to undergoasexual propagation beginning in 2013 near Bakersfield in the SanJoaquin Valley of Central California, U.S.A. by grafting on matureThompson rootstock (non-patented in the United States). Such asexualpropagation has been conducted thereafter in successive years through2014 and has shown that the characteristics of the new variety arestrictly transmissible from one generation to another. Accordingly, thenew variety undergoes asexual propagation in a true to type manner.

SUMMARY OF THE INVENTION

The new variety ‘ARRATHIRTYFOUR’ is a large, white seedless table grapewith a high production, e.g., about 42 bunches per vine, and an averageof about one to two bunches per shoot.

Asexual reproduction by micro propagation of the new variety asperformed near Bakersfield, Calif., U.S.A., shows that the forgoing andother distinguishing characteristics come true to form and areestablished and transmitted through succeeding propagations.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying photographic illustration shows typical specimens ofvegetative growth of six year old specimens of the new variety, in coloras nearly true as it is reasonably possible to make in a colorillustration of this character. Colors in the photograph may differ fromthe color values cited in the detailed botanical description below,which accurately describes the colors of the new Grapevine.

FIG. 1 shows leaves, stems and grapes of ‘ARRATHIRTYFOUR’.

DETAILED BOTANICAL DESCRIPTION

The chart used in the identification of colors is The R.H.S. ColourChart of The Horticultural Society of London, Sixth Edition. Thedescription is based on the observation of plants growing on ‘ThompsonSeedless’ rootstock outdoors near San Joaquin Valley of CentralCalifornia, U.S.A.

-   Vine characteristics:    -   -   Vigor.—Vigorous upright shoots.        -   Productive capacity.—Bearing at a natural, average capacity.            Spur pruning.        -   Trunk.—Strong and developed. Diameter is 2.8″ at 7″ above            ground. Rough with a fibrous, shaggy exterior. Light maple            brown coloring (greyed orange 177 C).        -   Date of bud burst in Bakersfield, Calif.—February 26^(th).-   Young shoot characteristics:    -   -   Openness of tip.—Fully open.        -   Prostrate hairs on tip.—Sparse.        -   Anthocyanin coloration of prostrate hairs on tip.—Weak;            yellow green 144B.        -   Density of Erect hairs on tip.—Medium.-   Young leaf characteristics:    -   -   Color of upper side of blade.—Yellow green 152C.        -   Color of lower surface of blade.—Yellow green 152B.        -   Prostrate hairs between main veins on lower side of            blade.—Sparse.        -   Erect hairs on main veins on lower side of blade.—Absent or            very sparse.-   Shoot characteristics:    -   -   Attitude (before tying).—Horizontal.        -   Color of dorsal side of internodes.—Yellow green 144A.        -   Color of ventral side of internodes.—Yellow green 144B.        -   Color of dorsal side of nodes.—Yellow green 144B.        -   Color of ventral side of nodes.—Yellow green 144C.        -   Erect hairs on internodes.—Absent or very sparse.        -   Length of tendrils.—4.3 inches.        -   Color of tendrils.—Yellow green 146C.        -   Number of tendrils.—6.-   Flower characteristics:    -   -   Sexual organs.—fully developed stamens and fully developed            gynoecium.        -   Flower length.—0.28 inches.        -   Flower diameter.—0.13 inches.        -   Flower time of bloom.—May 6^(th).        -   Pistil length.—0.14 inches.        -   Pistil color.—Green 143A.        -   Pollen color.—Yellow 8C.        -   Stamen (number).—6.-   Mature leave characteristics:    -   -   Size of blade (inches).—Medium (8.2″×7″).        -   Shape of blade.—Wedge-shaped.        -   Blistering of upper side of blade.—Weak.        -   Pattern of veins for upper blade.—Netlike venation.        -   Pattern of veins for lower blade.—Netlike venation.        -   Number of lobes.—Five.        -   Depth of upper lateral sinuses.—Absent or very shallow.        -   Arrangement of lobes of upper lateral sinuses (only            varieties with lobed leaves).—Open.        -   Arrangement of lobes of petiole sinus.—Wide open.        -   Length of teeth.—0.5 inches.        -   Ratio length\width of teeth.—Medium.        -   Shape of teeth.—Both sides convex.        -   Proportion of main veins on upper side of blade with            anthocyanin coloration.—Low; Color yellow green 146C.        -   Prostrate hairs between main veins on lower side of            blade.—Absent or very sparse.        -   Erect hairs on main veins on lower side of blade.—Absent or            very sparse.        -   Length of petiole compared to length of middle            vein.—Moderately shorter.        -   Top side color.—Green 137 C.        -   Bottom side color.—Yellow green 146 C.        -   Texture.—A little rough.        -   Vein color.—Yellow-green 146 D.        -   Petiole length.—4″.        -   Petiole diameter.—0.1″.        -   Petiole color.—Yellow green 146C.        -   Base descriptors.—Smooth.        -   Leaf margin.—Doubly Serrate.        -   Leaf apex.—Acute.-   Reproductive organs: Stamen.    -   -   Color.—Green 137C.        -   Size.—0.34″.        -   Date of beginning of ripening in Bakersfield, Calif.—July            15th.-   Bunch characteristics:    -   -   Bunch length (inches).—10 inches.        -   Bunch diameter (inches).—7 inches.        -   Bunch shape.—Conic.        -   Density.—Dense.        -   Color of peduncle.—Yellow Green 144B.        -   Length of peduncle of primary bunch.—Long 2.2″.        -   Diameter of peduncle of primary bunch.—0.4″.        -   Average bunch weight.—3.5 lbs.-   Berry characteristics:    -   -   Size.—very large.        -   Length.—32 mm.        -   Weight.—⅜ oz.        -   Diameter.—0.8″.        -   Shape.—broad ellipsoid.        -   Color of skin (without bloom).—Yellow green 144C.        -   Ease of detachment from pedicel.—Moderately easy.        -   Thickness of skin.—Medium.        -   Coloration of flesh.—Anthocyanin absent or very weak, yellow            green 150C.        -   Firmness of flesh.—Very firm.        -   Particular flavor.—None.        -   Formation of seeds.—None.        -   Pedicel color.—Yellow green 146C.        -   Pedicel length.—0.5″.        -   Pedicel diameter.—0.1″.        -   Market use of observed plant.—Fresh market.        -   Berries per bunch.—180.-   Woody shoot characteristics:    -   -   Woody shoot color.—Greyed orange 166B.-   Age and growing conditions: Six years growing under Y system in    South Joaquin Valley (hot, dry summers).-   Shipping characteristics:    -   -   Number of days fruit has been stored under specific            conditions.—Fruit was in cold storage. Stored in poly bags            inside Styrofoam boxes with sulfur pads. After 30 Days:            rachises were 70% green; 2% berry shattering; no berry            wrinkling or cracks were apparent.-   DNA profile: To further the characterize the new ARRA variety DNA    was extracted from leaf samples and DNA profiles were obtained at    California Seed & Plant Lab, California USA using base pairs for 8    standard microsatellite DNA markers. The data is presented    hereafter.

TABLE 2 DNA profile for ‘ARRATHIRTYFOUR’ Microsatellite DNA Allele SizesMarker in Base Pairs M1 234 234 M2 239 249 M3 181 194 M4 204 210 M5 273273 M6 135 145 M7 187 189 M8 251 255 M9 212 212  M10 237 247

The ‘ARRATHIRTYFOUR’ variety has not been observed under all possibleenvironmental conditions to date. Accordingly, it is possible that thephenotypic expression may vary somewhat with changes in light intensityand duration, cultural practices, and other environmental conditions.

What is claimed:
 1. A new and distinct grapevine, botanically known asVitis vinifera identified as ‘ARRATHIRTYFOUR’; substantially as shownand described herein.